MD
Mary Davis — 1920 US Census Record
Model Tree available1920 United States Federal Census · Suffolk, Massachusetts
Our Model Tree links this Mary Davis across the 1900, 1910 and 1920 US Censuses in Suffolk, Massachusetts (XGBoost, ~Confirmed), with identified parents Joseph & William — first a daughter (b.~1899), then head of a 12-person household.
Age 21
b. ~1899
Female
Daughter
Born: Massachusetts
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Suffolk, Massachusetts |
| Surname | Davis |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Additional Details | |
| Occupation | Operator |
| Industry | Tel Co |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Operator |
| Township / Ward | Boston City |
| Est. Birth Year | ~1899 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
12 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Agnes Davis | Daughter | — | 10 | ~1910 |
| Emily Davis | Daughter | — | 6 | ~1914 |
| Margaret Davis | Daughter | — | 14 | ~1906 |
| Mary Davis | Daughter | — | 21 | ~1899 |
| Louise Davis | Daughter | — | 12 | ~1908 |
| Rose Davis | Daughter | — | 2 | ~1918 |
| Joseph Davis | Head | — | 46 | ~1874 |
| Joseph Davis | Son | — | 19 | ~1901 |
| Francis Davis | Son | — | 4 | ~1916 |
| John Davis | Son | — | 17 | ~1903 |
| Thomas Davis | Son | — | 23 | ~1897 |
| Sarah Davis | Spouse | — | 45 | ~1875 |
Census Appearances
1900
Suffolk, Massachusetts
Daughter, age 4
Suffolk, Massachusetts · implied b. ~1896 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Birth Month | Dec |
| Birth Year | 1896 |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1910
Suffolk, Massachusetts
Daughter, age 13
Suffolk, Massachusetts · implied b. ~1897 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Mary A |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Suffolk, Massachusetts
Daughter, age 21
Suffolk, Massachusetts · implied b. ~1899 — 12 household members
| Surname | Davis |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Operator |
| Industry | Tel Co |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links Mary Davis across 3 US Census years (1900, 1910 and 1920) in Suffolk, Massachusetts, using XGBoost record linkage. Identified parents: father Joseph Davis (~0.92 confidence) and father William Davis (~0.92 confidence) and father Walter Davis (~0.92 confidence) and mother Mary Davis (~0.92 confidence) and mother Mary Davis (~0.92 confidence) and mother Sarah Davis (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Joseph Davis
b. ~1874
Source father
● Household
· direct · ~0.92
Father
William Davis
b. ~1858
Source father
● Household
· direct · ~0.92
Father
Walter Davis
b. ~1860
Source father
● Household
· direct · ~0.92
Mother
Mary Davis
b. ~1859
Source mother
● Household
· direct · ~0.92
Mother
Mary Davis
b. ~1858
Source mother
● Household
· direct · ~0.92
Mother
Sarah Davis
b. ~1875
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Davis
Daughter · 1920 · age 21 · b. ~1899 · Massachusetts
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Sibling
Thomas Davis
Sibling · 1920 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Davis
Sibling · 1920 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rose Davis
Sibling · 1920 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Davis
Sibling · 1920 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Davis
Sibling · 1920 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Louise Davis
Sibling · 1920 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Emily Davis
Sibling · 1920 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Agnes Davis
Sibling · 1920 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Davis
Sibling · 1920 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — Suffolk, Massachusetts
Open full size
1920 US Federal Census — Suffolk, Massachusetts
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu739unit:0168)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Gordon | 8 | Son | — | Massachusetts |
| 52 | Arthur Plamondon | 27 | Head | Upholsterer | Massachusetts |
| 53 | Lena Plamondon | 24 | Wife | — | Massachusetts |
| 54 | Hester Plamondon | 7 | Son | — | Massachusetts |
| 55 | Leo Plamondon | 5 | Son | — | Massachusetts |
| 56 | Alice Plamondon | 3 | Daughter | — | Massachusetts |
| 57 | Elma Plamondon | 1 | Daughter | — | Massachusetts |
| 58 | Mary Laughlin | 56 | Head | — | Ireland |
| 59 | Mary Laughlin | 26 | Daughter | Operator | Massachusetts |
| 60 | Charles Flynn | 26 | Head | Mechanist | Massachusetts |
| 61 | Alice Flynn | 23 | Wife | — | Massachusetts |
| 62 | Dorothy Flynn | 2 | Daughter | — | Massachusetts |
| 63 | William Flynn | 1 | Son | — | Massachusetts |
| 64 | John Donnelly | 51 | Head | Plumber | Massachusetts |
| 65 | Ellen Donnelly | 40 | Wife | — | Massachusetts |
| 66 | George Donnelly | 16 | Son | — | Massachusetts |
| 67 | Paul Donnelly | 14 | Son | — | Massachusetts |
| 68 | Helen Donnelly | 12 | Daughter | — | Massachusetts |
| 69 | Catherine Lynch | 38 | Niece | Matron | Massachusetts |
| 70 | Eugene Mcelaine | 24 | Head | Policeman | Maine |
| 71 | Mabel Mcelaine | 30 | Wife | — | England |
| 72 | Alfred Mcelaine | 2 | Son | — | England |
| 73 | Amy Mcelaine | 1 | Daughter | — | Massachusetts |
| 74 | Etta Bickford | 64 | Mother | — | Maine |
| 75 | Mary Lutte | 40 | Head | — | Sicily |
| 76 | Abell Lutte | 19 | Daughter | Packer | Massachusetts |
| 77 | Rose Lutte | 14 | Daughter | Floor Girl | Massachusetts |
| 78 | Edward Moses | 37 | Head | Teamster | Nova Scotia |
| 79 | Winifred Moses | 30 | Wife | — | Nova Scotia |
| 80 | Hazel Moses | 3 | Daughter | — | Massachusetts |
| 81 | Judson Smith | 44 | Head | Dissector | Nova Scotia |
| 82 | Rose Smith | 42 | Wife | — | New Brunswick |
| 83 | Etta Smith | 14 | Daughter | Operator | Massachusetts |
| 84 | George Smith | 12 | Son | — | Massachusetts |
| 85 | Judson Smith | 9 | Son | — | Massachusetts |
| 86 | Gladys Smith | 6 | Daughter | — | Massachusetts |
| 87 | Ethel Smith | 4 | Daughter | — | Massachusetts |
| 88 | William Smith | 3 | Son | — | Massachusetts |
| 89 | Joseph Davis | 46 | Head | Steel Shaper | Portugal |
| 90 | Sarah Davis | 45 | Wife | — | Ireland |
| 91 | Thomas Davis | 23 | Son | Policeman | Massachusetts |
| 92 | Mary Davis THIS PERSON | 21 | Daughter | Operator | Massachusetts |
| 93 | Joseph Davis | 19 | Son | Messenger | Massachusetts |
| 94 | John Davis | 17 | Son | Assistant | Massachusetts |
| 95 | Margaret Davis | 14 | Daughter | — | Massachusetts |
| 96 | Louise Davis | 12 | Daughter | — | Massachusetts |
| 97 | Agnes Davis | 10 | Daughter | — | Massachusetts |
| 98 | Emily Davis | 6 | Daughter | — | Massachusetts |
| 99 | Francis Davis | 4 | Son | — | Massachusetts |
| 100 | Rose Davis | 2 | Daughter | — | Massachusetts |
Related Census Records
Pedigree Summary
Mary + 9 siblings
Gen 1 · 6 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)